The Google index is similar to an index in a library, which lists information about all the books the library has available. However, instead of books, the Google index lists all of the webpages that Google knows about. When Google visits your site, it detects new and updated pages and updates the Google index.
Go to Google Search Console.
Navigate to the URL inspection tool.
Paste the URL you'd like Google to index into the search bar.
Wait for Google to check the URL.
Click the “Request indexing” button (if not already indexed)